Tire-tread.



A. KANZEE.

TIRE TREAD. l APPLlcKAlo man APR.17,1912.

. Patented .me 15, 1915.

"Hum" -ll-A IITNESSES Treads,

AUSTIN KNZEE, OF SAN FRANCISCO, CALIFORNIA.

TIRE-TREAD.

Specification of Letters Patent.

Patented J une i5, 191 5.

Application filed April 17, 1912. Serial No. 691,279.

T0 all whom it may concern Bc it known that I, AUSTIN KANZEE, a

citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented new and useful Improvements in Tireof which the following is-a specilication.

This invention relates to improvements in tire treads.

It is one of the objects of my invention to provide a tire tread-Shaving raised tractive projections disposed along the tread surface or face and suitably spaced apart from each other, said projections being so arranged as to overlap each other so that one extremity of one projection will extend Abeyond the extremities of the adjacent projections thereby forming a continuous tread surface.

It is a further object of my invention to provide certain of the tractive projections, all of which are raised radially upwardly from the body of the tire, with recesses or suction cups to cause the tire to adhere to the surface over which it is being advanced and thereby assist in eliminating or reducing skidding andslipping of the wheels.

It is a further object of my invention to provide the raised tractive projections with fabric strips which are preferably molded into the projections when the same are formed and whichl strips are disposed radially edgewise with respect to the tire, and

preferably in spliced parallel relation with respect to each other. I desirabl provide raised projections of diiferent con igurations and find it desirable to arrange the fabric strips in groups, With the strips of one group being disposed at an angle `to the adjacent group of strips, and certain of the groups of strips being disposed in angular'l relation with respect to the central line of drive of the tread.

My invention will be more fully described in connection with the accompanying drawing and will be more particularly pointed out in and by the appended claims.

In the drawing z-Figure l is a developed face view of a tread showing one embodiment of my invention. Fig. 2 is a sectional view online 2 2 of Fig. l. Fig. 3 is a sectional view on linel 3-3 of Fig. l. Fig. 4 is a sectional view on line l-4 of Fig. 1.

Like characters of referenceA designate similar parts throughout the different figures of the drawing.'

longitudinal axis of the The body of the tread is indicated at l 'and is provided within its lateral margins 2, with a series of facial radially elevated or raised tractive projections 3 and el. As illustrated, the projections 3 are of diamondshaped configuration and the projections i are substantially I-shaped. ,although it will be'understood that I doA not wish to be limited to this precise construction. These projections, according to my invention, are so arranged that the extremities 5 of the projections 3 extend in overlapping relation or past the extremities 6, of the projections 4L. By means of this arrangement, a continuous elevated or raised tractive surface is provided by means of spaced projections by reason of the fact that the extre1nities 5 will engage the road surface prior to the time the extremities G leave the road surface. This arrangement, by reason of the spacing ot' the projections, provides for an effective tractive drive by presenting spaced corner or marginal projections. Going in either direction, the margins 7 or 8, throughout the outline of the I-shaped projections 4, act as tractive corners and so likewise do the extremities 5 of the projections 3.

In the embodiment shown, only the .pro-v jections 3 have facial recesses or suction cups 9 and l0, preferably T-shaped, and the niargins ll, l2, 18 and lfl of these suction cups likewise form effective tractive portions lying in, and on opposite sides, of the line of drive. The line of drive is coincident with the section line In order to avoid filling the suction cups with loose surface material of the road, as far as possible, I desirably curve the bottoms l5 and 1G. as shown in Fig.- 2. Likmvise as shown in Fig. 3, thc end portions l are curved to avoid sharp corners in the hollow bases of said cups. It will be understood that the cxtrelnitics of T-shaped suction oups are not relied upon to present tractive portions.

In order to enhance the wearing qualities of .the road engaging tacos of the projcctions as much as possible, I provide the same with strips preferably madeo'l l'ahric, and. which are disposed'in radial edgcwisc rolation to the tire, and in spaced relation with respect to each other.

In the projections 4t, the strips 17 aro arranged parallel` with the line of drive and in parallel relation/with respect to each other and transversely with respect to the projections il. The

lOl:

edges .oit Vthese strips extend to the outer face of the projections 4 and toward the; base thereoi, and preferably not into the body 1 of the tire. By reason of -this arrangement, the projections are stiilened and toughened to stand Wear and the flexibility of the body portion 1 is in no Way impaired. By reason oit the angular coniigurationef the margins of the projections 3, I preenably dispose l as much o?? the 'strip edge to the surface as* possible.v @n one .side of the line of drive,

and on one end of the projections 3, the

group 18 has its strips arranged angularly to the line ci' drive and the strips 18 and 19 diverge from the line of drive. The groups 20 and 21 are angnlarly disposed with respect 'to the line of drive and also With respect to the disposition of the strips 18 and 19. It will also be seen that effective skidresisting edges 22 and 23 are presented .laterally along the projections 3 and anglilarly to the margins 2. Such surfaces 24: are also presented by the projections 4L, which surfaces are parallel With the sides 2.

t Will be seen from the-foregoing, that my invention includes the method of molding a tire having a body portion and elelvated tractive projections7 and in molding in Asaid projections a series ot' wearing strips disposed radially edgewise 'of the tire and not extending into the body portion thereof. While l have herein shown and described one spccitic embodiment of my invention, it will. be understood that do notwvish to be limited thereto except. for such limital tions as the claims may import.

l claim e y 1. A tire having a tread portion provided with a series oit radially elevated tractive projections, and strips oi fabric molded into said projections and disposed radially edgewise with respect to the tire, the strips other projections being the strips in groups, to present-y.

in sornelof said projections being parallel 'with theline of drive and the strips of angular with respect to the line of drive, substantially as described.

2. A tire having disposed on its surface `portion a series of raised tractive projections disposed in spaced relation With replspelct to each other and With one extreme `)"{portionvof one projection extending beyond .'the'fextremity of the next adjacent projection, thereby forming a continuous overlapping series, and fabric strips moldedin said projections, said strips being disposed radially edgewise with respect to the tire,

the strips in alternateprojections being disposed in a circumferential direction with respect to the tire and those in the'intermediate projections being disposed vat an angle with respect to the circumferential direction.

3. A tire having portion aseries oi'. raised tractive` projections spect to each other and with one extreme portion .ci one projection extending beyond the extremity of the next adjacntprojec tion, thereby forming a eontinns'ms';"over`- lapping series, said projections, said strips being: disposed radially edgevvise with respect-topthe'tire, the strips in alternate projectionsy being disposed in` a circumferential direction with respect to the tire and thosevin the intermediate projections beingH disposed atright angles to each other.

In testimony whereof I in presence of two witnesses.

l ans'riN niezen, Witnesses l LoUis E. MARSH, JOHN J. Corwin dispdsed on its 'surf-ace' disposed in spaced relation vvrithureand fabric strips 4 nadld'ed in aiin mygjsignature 

